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Constantly print Subprocess output while process is running
...e = popen.wait()
if return_code:
raise subprocess.CalledProcessError(return_code, cmd)
# Example
for path in execute(["locate", "a"]):
print(path, end="")
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Insert text with single quotes in PostgreSQL
...rsions or if you still run with standard_conforming_strings = off or, generally, if you prepend your string with E to declare Posix escape string syntax, you can also escape with the backslash \:
E'user\'s log'
Backslash itself is escaped with another backslash. But that's generally not preferabl...
How do I create a list of random numbers without duplicates?
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With reference to your specific code example, you probably want to read all the lines from the file once and then select random lines from the saved list in memory. For example:
all_lines = f1.readlines()
for i in range(50):
lines = random.sample(all_lines, 40)
This way, you only need to a...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
... +1 for pointing out one of the most common, and commonly-overlooked, errors of this sort.
– R.. GitHub STOP HELPING ICE
Aug 11 '10 at 16:27
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pip broke. how to fix DistributionNotFound error?
Whenever i try to use pip I get an error. For exampple:
11 Answers
11
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Call int() function on every list element?
...for. The advantage of a generator is that if you might not need to look at all elements then you won't have to waste time calculating them in advance.
– Mark Byers
Jul 30 '10 at 12:27
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Generate JSON string from NSDictionary in iOS
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-(NSString*) bv_jsonStringWithPrettyPrint:(BOOL) prettyPrint {
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:self
options:(NSJSONWritingOptions) (prettyPrint ? NSJSONWritingPrettyPrinted : 0)
...
How to throw std::exceptions with variable messages?
...tter & operator = (Formatter &);
};
Example:
throw std::runtime_error(Formatter() << foo << 13 << ", bar" << myData); // implicitly cast to std::string
throw std::runtime_error(Formatter() << foo << 13 << ", bar" << myData >> Formatt...
Map function in MATLAB?
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edited Apr 10 '18 at 15:05
answered Jun 11 '09 at 19:48
g...
Conversion from Long to Double in Java
Is there any way to convert a Long data type to Double or double ?
8 Answers
8
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